Enable noexcept on Windows, use for a few move constructors.

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 0419926d127955f5dd7b7b0ff245b8d90e46effc..3fb6c90215c53d3ffe856b8d895759a199aeb58a 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -303,17 +303,11 @@ config("compiler") {
   # ---------------------------------
   if (is_linux || is_android) {
     if (use_pic) {
-      cflags += [
-        "-fPIC",
-      ]
-      ldflags += [
-        "-fPIC",
-      ]
+      cflags += [ "-fPIC" ]
+      ldflags += [ "-fPIC" ]
     }
 
-    cflags += [
-      "-pipe",  # Use pipes for communicating between sub-processes. Faster.
-    ]
+    cflags += [ "-pipe" ]  # Use pipes for communicating between sub-processes. Faster.
 
     ldflags += [
       "-Wl,-z,noexecstack",
@@ -905,6 +899,10 @@ config("default_warnings") {
       # This is necessary for the shared library build.
       "/wd4251",
 
+      # C4312 is a VS 2015 64-bit warning for integer to larger pointer.
+      # TODO(brucedawson): fix warnings, crbug.com/554200
+      "/wd4312",
+
       # C4351: new behavior: elements of array 'array' will be default
       #        initialized
       # This is a silly "warning" that basically just alerts you that the
@@ -967,10 +965,10 @@ config("default_warnings") {
       "/wd4459",
     ]
 
-    cflags += [
-      # C4312 is a VS 2015 64-bit warning for integer to larger pointer.
-      # TODO(brucedawson): fix warnings, crbug.com/554200
-      "/wd4312",
+    cflags_cc += [
+      # Allow "noexcept" annotations even though we compile with exceptions
+      # disabled.
+      "/wd4577",
     ]
 
     if (current_cpu == "x86") {