Fix some clang warnings with -Wmissing-braces in ui.

Clang warns if there are missing braces around a subobject
initializer. The most common idiom that triggers this is:
  STRUCT s = {0};
if the first field of STRUCT is itself a struct. This can
be more simply written as:
  STRUCT s = {};
which also prevents the warning from firing.

BUG=505297

Review URL: https://codereview.chromium.org/1215343002

Cr-Commit-Position: refs/heads/master@{#337091}

6 files changed, 9 insertions, 9 deletions

diff --git a/ui/base/clipboard/clipboard_win.cc b/ui/base/clipboard/clipboard_win.cc
index a58bb5a..e818f22 100644
--- a/ui/base/clipboard/clipboard_win.cc
+++ b/ui/base/clipboard/clipboard_win.cc
@@ -778,7 +778,7 @@ void ClipboardWin::WriteBitmap(const SkBitmap& bitmap) {
   // pointer.  Someone has to memcpy it into GDI, it might as well be us here.
 
   // TODO(darin): share data in gfx/bitmap_header.cc somehow
-  BITMAPINFO bm_info = {0};
+  BITMAPINFO bm_info = {};
   bm_info.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
   bm_info.bmiHeader.biWidth = bitmap.width();
   bm_info.bmiHeader.biHeight = -bitmap.height();  // sets vertical orientation
diff --git a/ui/base/test/ui_controls_internal_win.cc b/ui/base/test/ui_controls_internal_win.cc
index 059c820..3667bcf 100644
--- a/ui/base/test/ui_controls_internal_win.cc
+++ b/ui/base/test/ui_controls_internal_win.cc
@@ -199,7 +199,7 @@ bool SendKeyPressImpl(HWND window,
     return true;
   }
 
-  INPUT input[8] = { 0 };  // 8, assuming all the modifiers are activated.
+  INPUT input[8] = {};  // 8, assuming all the modifiers are activated.
 
   UINT i = 0;
   if (control) {
diff --git a/ui/gfx/font_render_params_win.cc b/ui/gfx/font_render_params_win.cc
index 54fb165..968f998 100644
--- a/ui/gfx/font_render_params_win.cc
+++ b/ui/gfx/font_render_params_win.cc
@@ -17,7 +17,7 @@ namespace gfx {
 namespace {
 
 FontRenderParams::SubpixelRendering GetSubpixelRenderingGeometry() {
-  DISPLAY_DEVICE display_device = {sizeof(DISPLAY_DEVICE), 0};
+  DISPLAY_DEVICE display_device = {sizeof(DISPLAY_DEVICE)};
   for (int i = 0; EnumDisplayDevices(nullptr, i, &display_device, 0); ++i) {
     // TODO(scottmg): We only support the primary device currently.
     if (display_device.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE) {
diff --git a/ui/gfx/icon_util.cc b/ui/gfx/icon_util.cc
index 8a9c0eb..94a77bb 100644
--- a/ui/gfx/icon_util.cc
+++ b/ui/gfx/icon_util.cc
@@ -322,7 +322,7 @@ HICON IconUtil::CreateCursorFromDIB(const gfx::Size& icon_size,
                                     const gfx::Point& hotspot,
                                     const void* dib_bits,
                                     size_t dib_size) {
-  BITMAPINFO icon_bitmap_info = {0};
+  BITMAPINFO icon_bitmap_info = {};
   gfx::CreateBitmapHeader(
       icon_size.width(),
       icon_size.height(),
diff --git a/ui/native_theme/native_theme_win.cc b/ui/native_theme/native_theme_win.cc
index aee3c46..1f1aeed 100644
--- a/ui/native_theme/native_theme_win.cc
+++ b/ui/native_theme/native_theme_win.cc
@@ -1129,10 +1129,10 @@ HRESULT NativeThemeWin::PaintScrollbarArrow(
     const gfx::Rect& rect,
     const ScrollbarArrowExtraParams& extra) const {
   static const int state_id_matrix[4][kNumStates] = {
-      ABS_DOWNDISABLED, ABS_DOWNHOT, ABS_DOWNNORMAL, ABS_DOWNPRESSED,
-      ABS_LEFTDISABLED, ABS_LEFTHOT, ABS_LEFTNORMAL, ABS_LEFTPRESSED,
-      ABS_RIGHTDISABLED, ABS_RIGHTHOT, ABS_RIGHTNORMAL, ABS_RIGHTPRESSED,
-      ABS_UPDISABLED, ABS_UPHOT, ABS_UPNORMAL, ABS_UPPRESSED
+      {ABS_DOWNDISABLED, ABS_DOWNHOT, ABS_DOWNNORMAL, ABS_DOWNPRESSED},
+      {ABS_LEFTDISABLED, ABS_LEFTHOT, ABS_LEFTNORMAL, ABS_LEFTPRESSED},
+      {ABS_RIGHTDISABLED, ABS_RIGHTHOT, ABS_RIGHTNORMAL, ABS_RIGHTPRESSED},
+      {ABS_UPDISABLED, ABS_UPHOT, ABS_UPNORMAL, ABS_UPPRESSED},
   };
   HANDLE handle = GetThemeHandle(SCROLLBAR);
   RECT rect_win = rect.ToRECT();
diff --git a/ui/views/corewm/cursor_height_provider_win.cc b/ui/views/corewm/cursor_height_provider_win.cc
index 0d28d38..1fde647 100644
--- a/ui/views/corewm/cursor_height_provider_win.cc
+++ b/ui/views/corewm/cursor_height_provider_win.cc
@@ -83,7 +83,7 @@ int CalculateCursorHeight(HCURSOR cursor_handle) {
   ICONINFO icon = {0};
   GetIconInfo(cursor_handle, &icon);
 
-  BITMAPINFO bitmap_info = {0};
+  BITMAPINFO bitmap_info = {};
   bitmap_info.bmiHeader.biSize = sizeof(bitmap_info.bmiHeader);
   if (GetDIBits(hdc, icon.hbmMask, 0, 0, NULL, &bitmap_info, DIB_RGB_COLORS) ==
       0)