external/chromium_org: add dummy arm64 makefile

Add a dummy arm64 makefile that is just a copy of the arm makefile.
This will allow a multiarch arm64/arm build to succeed.

Change-Id: I6c383c22c9cfaea1cd4d1c302be6c620d0125d1d
Merge "external/chromium_org: add dummy arm64 makefile"
Update makefiles following gyp r1857 cherrypick.

gyp r1857 was cherrypicked to fix an issue with assembly source files on
64-bit hosts; regenerate the makefiles.

Change-Id: I6587253cb18082c8ced3a5d735b06ca328ab34bf
Merge "Update makefiles following gyp r1857 cherrypick."
external-chromium_org: Add dummy x86_64 make file

Change-Id: Iafbb6f73ef03946690957be122522b86db26728b
Signed-off-by: Qiming Shi <qiming.shi@intel.com>
Merge "external-chromium_org: Add dummy x86_64 make file"
fix dependency on libwebviewchromium.so for arm64

On multilib builds TARGET_OUT_INTERMEDIATE_LIBRARIES points to the
64-bit libraries directory.  When TARGET_2ND_ARCH is arm, use
2ND_TARGET_OUT_INTERMEDIATE_LIBRARIES instead.

Apply the same fix to mips and x86.

Change-Id: I1216d3d75f807f8def17811469a877cc7a665281
Merge "fix dependency on libwebviewchromium.so for arm64"