Suppress two WebGL conformance tests flaking on Android.

  conformance/glsl/functions/glsl-function-min-gentype.html
  conformance/glsl/implicit/add_ivec3_vec3.vert.html

Flaking on Nexus 5X.

Tbr: ynovikov@chromium.org
Tbr: crouleau@chromium.org
Tbr: perezju@chromium.org
Bug: 912161
Change-Id: I62854de75db2ba50524cbc8f4150080be87ea47a
Reviewed-on: https://chromium-review.googlesource.com/c/1372473Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615720}

content/test/gpu/gpu_tests/webgl_conformance_expectations.py

@@ -753,6 +753,10 @@ class WebGLConformanceExpectations(GpuTestExpectations):
         ['android', ('qualcomm', 'Adreno (TM) 418')], bug=912161)
     self.Flaky('conformance/glsl/functions/glsl-function-dot.html',
         ['android', ('qualcomm', 'Adreno (TM) 418')], bug=912161)
+    self.Flaky('conformance/glsl/functions/glsl-function-min-gentype.html',
+        ['android', ('qualcomm', 'Adreno (TM) 418')], bug=912161)
+    self.Flaky('conformance/glsl/implicit/add_ivec3_vec3.vert.html',
+        ['android', ('qualcomm', 'Adreno (TM) 418')], bug=912161)
     # This test is skipped because it is crashing the GPU process.
     self.Skip('conformance/glsl/misc/shader-with-non-reserved-words.html',
         ['android', ('qualcomm', 'Adreno (TM) 418'), 'no_passthrough'],