fix display of fiddles that DON'T have compile errors

BUG=skia:

Review URL: https://codereview.chromium.org/644253003
Implicit SkTextBlob bounds

Compute blob bounds when the client doesn't pass explicit run rects to
the builder. This allows us to remove a couple of internal workarounds.

R=reed@google.com,mtklein@google.com,bungeman@google.com

Review URL: https://codereview.chromium.org/654873003
Override SkCanvas::drawImage() in SkDeferredCanvas and SkGPipe

BUG=skia:2947

Review URL: https://codereview.chromium.org/613673005
Override SkCanvas::drawImage() in SkRecorder.

BUG=skia:2947

Review URL: https://codereview.chromium.org/610003002
Support GLSL es 3.00

BUG=skia:

Review URL: https://codereview.chromium.org/659443007