Whitelist Qualcomm GPUs for GPU rasterization on Android 4.4

This expands the GPU rasterization device whitelist to include all
Android 4.4 devices with Qualcomm GPUs.

BUG=None

Review URL: https://codereview.chromium.org/463043004

git-svn-id: http://src.chromium.org/svn/trunk/src/gpu@289301 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
Revert 289154 "Revert 289067 "Use RE string pattern matching for..."

> Revert 289067 "Use RE string pattern matching for blacklist stri..."
> 
> Reason for revert: uninitialize memory access
> 
> http://build.chromium.org/p/chromium.memory.fyi/builders/Chromium%20Mac%20%28valgrind%29%282%29/builds/29469/steps/memory%20test%3A%20content/logs/stdio
> 
> > Use RE string pattern matching for blacklist strings.
> > 
> > Including cpu_brand, gl_vendor, gl_renderer, gl_extension, driver_vendor,
> > and machine_model_name.
> > 
> > BUG=396578
> > TBR=piman@chromium.org
> > TEST=gpu_unittests
> > 
> > Review URL: https://codereview.chromium.org/452293002
> 
> TBR=zmo@chromium.org
> 
> Review URL: https://codereview.chromium.org/465163002

TBR=oshima@chromium.org

Review URL: https://codereview.chromium.org/468223002

git-svn-id: http://src.chromium.org/svn/trunk/src/gpu@289308 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
Move StringToUpperASCII and LowerCaseEqualsASCII to the base namespace

Convert LowerCaseEqualsASCII to take StringPiece. In the current patch this is
generally a NOP but will allow me to delete the other 4 variants in a followup
(wanted to do that separately since that will require more review, since
callsites will be changed in nontrivial ways).

In some cases, LowerCaseEqualsASCII is called with a WebString, which no
longer is implicitly converted. I added base::string16(...) around such
calls to force the right conversion. It happened in these files:
  window_container_type.cc
  savable_resources.cc
  render_view_impl.cc
  blink_ax_tree_source.cc
  password_form_conversion_utils.cc
  translate_helper.cc
  chrome_render_view_observer.cc
  dom_serializer_browsertest.cc

R=jamesr@chromium.org

Review URL: https://codereview.chromium.org/448143008

git-svn-id: http://src.chromium.org/svn/trunk/src/gpu@289312 4ff67af0-8c30-449e-8e8b-ad334ec8d88c