Roll chromium_revision 310ea93..8cf53d6 (349094:351112)

Our perf test suite webrtc_perf_tests timed out, which caused most
of the delay landing this (https://crbug.comn/535973 and
https://codereview.chromium.org/1370133004).

Other problems with executing Android tests also needed to be
resolved in order to land this (http://crbug.com/534849).

Libvpx has moved from third_party/libvpx to third_party/libvpx_new
as of https://codereview.chromium.org/1323333002/

Android GN was blocking this roll due to a problem that ended up
being caused by a bug (http://crbug.com/534849).

Relevant changes:
* src/buildtools: f7310ee..8d89c1b
* src/third_party/boringssl/src: 1d128f3..4c60d35
* src/third_party/icu: 6b3ce81..423fc7e
* src/third_party/libjpeg_turbo: 631e2dd..e4e7503
* src/third_party/libvpx: ac1772e..70db223
* src/third_party/libyuv: fcacbfb..62c49dc
* src/tools/gyp: 5d01a8c..01528c7
* src/tools/swarming_client: 77f720b..6e5d2b2
Details: 310ea93..8cf53d6/DEPS

Clang version changed 245965:247874
Details: 310ea93..8cf53d6/tools/clang/scripts/update.sh

BUG=481034, 535973
TBR=marpan@webrtc.org

Review URL: https://codereview.webrtc.org/1355083002

Cr-Commit-Position: refs/heads/master@{#10101}

webrtc/modules/video_coding/codecs/vp8/vp8.gyp

@@ -23,7 +23,7 @@
       'conditions': [
         ['build_libvpx==1', {
           'dependencies': [
-            '<(libvpx_dir)/libvpx.gyp:libvpx',
+            '<(libvpx_dir)/libvpx.gyp:libvpx_new',
           ],
         }],
       ],

webrtc/modules/video_coding/codecs/vp9/vp9.gyp

@@ -22,7 +22,7 @@
       'conditions': [
         ['build_libvpx==1', {
           'dependencies': [
-            '<(libvpx_dir)/libvpx.gyp:libvpx',
+            '<(libvpx_dir)/libvpx.gyp:libvpx_new',
           ],
         }],
         ['build_vp9==1', {