ui: Cleanup class/struct forward declarations

DEPS

Index: DEPS
diff --git a/DEPS b/DEPS
index 89b08be533a1aeff2d2f26e37b733e4bbba177e4..6fdd5cc2d1acb205ace0603227e56eff46db1f7c 100644
--- a/DEPS
+++ b/DEPS
@@ -40,11 +40,11 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': 'ad512797c9405f78b080a1d24cd98f465b9879dd',
+  'skia_revision': 'd3a2af75a959823a6a6d143409a64414ac64896a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
-  'v8_revision': 'a69e971966de81feea5eccd14addc66b18d812ca',
+  'v8_revision': 'd285969f85ddb3295f790f5944ecf473105aa00c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
@@ -52,7 +52,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
-  'angle_revision': 'f097e2380650696a4c20624e4668a184980e4d7d',
+  'angle_revision': '20c97cac2a15144b61ceec7404a9e6249c40f50a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.
@@ -64,7 +64,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
-  'pdfium_revision': '19cd7cc42700b844e6d9fc170a65bf7122d468b8',
+  'pdfium_revision': '3c669a7fb05dfb602992a5d2333081daef6f002f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling openmax_dl
   # and whatever else without interference from each other.
@@ -96,7 +96,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
-  'catapult_revision': '3c90067aa0d972a6485edcbd0b44ca19e071d858',
+  'catapult_revision': '4b4b17690727bca014fed929c341dd3ba37b78ad',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.
@@ -194,7 +194,7 @@ deps = {
     Var('chromium_git') + '/external/selenium/py.git' + '@' + '5fd78261a75fe08d27ca4835fb6c5ce4b42275bd',
 
   'src/third_party/libvpx/source/libvpx':
-    Var('chromium_git') + '/webm/libvpx.git' + '@' +  '1961a92a940ce73bb4f522c3e87b1fbdea216112',
+    Var('chromium_git') + '/webm/libvpx.git' + '@' +  '5c64c01c7ca3780d30f140e54a30088f780ae66a',
 
   'src/third_party/ffmpeg':
     Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + '3c7a09882102bfd6fecdb9d7296f43a8501db95e',
@@ -288,7 +288,7 @@ deps = {
     Var('catapult_revision'),
 
   'src/third_party/openh264/src':
-    Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + 'b37cda248234162033e3e11b0335f3131cdfe488',
+    Var('chromium_git') + '/external/github.com/cisco/openh264' + '@' + '0fd88df93c5dcaf858c57eb7892bd27763f0f0ac',
 
   'src/third_party/re2/src':
     Var('chromium_git') + '/external/github.com/google/re2.git' + '@' + 'dba3349aba83b5588e85e5ecf2b56c97f2d259b7',