Blacklist accelerated canvas and GPU raster on PowerVR SGX 540.

Canvas fails to render and GPU raster crashes the browser on the Galaxy
Tab 2.

Note that this blacklist will also affect the Galaxy Nexus which has the
same GPU.  These features do basically work on the Galaxy Nexus, but
I still observe issues like 1-second janks when GPU raster is enabled,
and we know in general it's a very buggy, long-unsupported driver, so I
think it's still appropriate to blacklist.

NOTRY=true
BUG=416910,169740,229891

Review URL: https://codereview.chromium.org/615243002

Cr-Commit-Position: refs/heads/master@{#297522}

gpu/config/software_rendering_list_json.cc

@@ -18,7 +18,7 @@ const char kSoftwareRenderingListJson[] = LONG_STRING_CONST(
 {
   "name": "software rendering list",
   // Please update the version number whenever you change this file.
-  "version": "9.8",
+  "version": "9.9",
   "entries": [
     {
       "id": 1,
@@ -1123,6 +1123,19 @@ LONG_STRING_CONST(
       "features": [
         "accelerated_video_decode"
       ]
+    },
+    {
+      "id": 102,
+      "description": "Accelerated 2D canvas and Ganesh broken on Galaxy Tab 2",
+      "cr_bugs": [416910],
+      "os": {
+        "type": "android"
+      },
+      "gl_renderer": "PowerVR SGX 540",
+      "features": [
+        "accelerated_2d_canvas",
+        "gpu_rasterization"
+      ]
     }
   ]
 }