GCC: declare move assignment operator and constructor of SplitAutocompletion.

GCC fails to resolve default move constructor of AutocompleteMatch, as
SplitAutocompletion move constructor is not declared noexcept. Adding default
declarations fixes the issue.

Bug: 819294
Change-Id: I64e32608bbdd24015a4a65f398b37de9465c5b54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2485527Reviewed-by: Angela Yoeurng <yoangela@chromium.org>
Commit-Queue: José Dapena Paz <jdapena@igalia.com>
Cr-Commit-Position: refs/heads/master@{#819270}

components/omnibox/browser/autocomplete_match.cc

@@ -85,6 +85,12 @@ SplitAutocompletion::SplitAutocompletion(base::string16 display_text,
 SplitAutocompletion::SplitAutocompletion() = default;
 SplitAutocompletion::SplitAutocompletion(const SplitAutocompletion& copy) =
     default;
+SplitAutocompletion::SplitAutocompletion(SplitAutocompletion&& other) noexcept =
+    default;
+SplitAutocompletion& SplitAutocompletion::operator=(
+    const SplitAutocompletion&) = default;
+SplitAutocompletion& SplitAutocompletion::operator=(
+    SplitAutocompletion&&) noexcept = default;
 
 SplitAutocompletion::~SplitAutocompletion() = default;
 

components/omnibox/browser/autocomplete_match.h

@@ -56,6 +56,10 @@ struct SplitAutocompletion {
                       std::vector<gfx::Range> selections);
   SplitAutocompletion();
   SplitAutocompletion(const SplitAutocompletion& copy);
+  SplitAutocompletion(SplitAutocompletion&&) noexcept;
+  SplitAutocompletion& operator=(const SplitAutocompletion&);
+  SplitAutocompletion& operator=(SplitAutocompletion&&) noexcept;
+
   ~SplitAutocompletion();
 
   bool Empty() const;